John Xxiii
Related Category: Roman Catholic Popes and Antipopes
antipope: see
Cossa, Baldassare.
More on John Xxiii
Cossa, Baldassare - c.13701419, Neapolitan churchman, antipope which John convened under pressure from Sigismund. At the opening of the council he reluctantly promised (1415) to abdicate if his rivals would do so...